Correction: Modulatory Effects of the Piccolo Genotype on Emotional Memory in Health and Depression. - Saskia Woudstra; Marie-José van Tol; Zoltán Bochdanovits; Nic J. van der Wee; Frans G. Zitman; Mark A. van Buchem; Esther M. Opmeer; André Aleman; Brenda W. Penninx; Dick J. Veltman; Witte J. Hoogendijk (PLoS ONE, 2013)